Keystones — Cornerstone
Five GCSE retrieval questions · 18 May 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄8 + 2⁄8
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 2x + 3 = 21
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Share 80 in the ratio 4:1
Answer: 64 and 16 -
5. Statistics Mean
Find the mean of: 15, 2, 3, 20
Answer: 10